I'm no longer a virgin - Printable Version

I'm no longer a virgin - Printable Version

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I'm no longer a virgin - jimxms - 27-05-2019

....at installing new injectors on a 2JZ-GE engine that is!!

Last night I bit the bullet and decided that I'd have a crack at installing a new set of 440cc injectors on the IS. I'd seen Phil01 do it previously so I had a good idea of what to do, although I wasn't exactly taking notes.

Started off by removing the intake pipe and the throttle body. The TB has two coolant pipes running to/from it, so I used some hose pinchers to stop coolant leaking out before removing them.

With the TB off I gave it a good clean inside with some MAF cleaner. It was absolutely filthy with tons of gunk around the throttle plate. To be honest I'm surprised it even opened properly!

Then I moved onto the "Y" part of the intake which had some really annoying vacuum hoses attached to it that needed really small hands to get in underneath and release before the pipe could be moved at all.

The Y part of the intake is where the pipe from the PCV goes, and oil vapour from the crank case is transferred for burning by the engine. After seeing the state of this pipe (tonnes of gunked up oil) I know that I definitely need an oil catch can, and I'd recommend one to anyone as all this oily gunk is clogging your pipes!

Now that I could get access to the fuel rail I had to remove the fuel dampener which is like a little UFO thing that sits on top of the fuel pipe. it was a biatch to get off, which Phil01 did say that it would be!

Once that was out of the way I could actually get the fuel rail off. So I put some rags below the injectors and pulled the fuel rail away, watching as my precious vpower wasted away.

Now it was just a case of installing the new injectors and putting it all together again. Here's what the engine looked like mid-swap:

[Image: l_inj1.jpg]

With everything back together again I got the Mrs to crank the car a few times while I checked for leaks. All seemed good so after plucking up the courage, I went and started the car for the first time with its new injectors.

First of all it idled a bit rough, but it soon picked up and was running nice and smooth. After a second stop and start of the car, it was actually starting better than it ever had before!!

Took it out for a quick drive, and WOW. The stock injectors must have seriously been limiting power, as the car just flies. I'll get some vids at the weekend, but it's like driving a totally different car, and I definitely need some time to get used to it as it gets to 60 a lot quicker than it stops from it now lol.

I'm no longer a virgin - Ally - 27-05-2019

Nice one Jim :thumbup1:

I'm no longer a virgin - Lexusboy - 27-05-2019

Wow sounds like your done a good job Jim..

At this rate your have nothing left to do to your car soon...

I'm no longer a virgin - toxo - 27-05-2019

Nice one, it's always satisfying to get stuff like that done on your own car and have it work properly.

You're probably overfuelling like mad now but unlikely to be enough to get bore wash so you'll be quite safe - in fact it will cool the cylinders more. Don't be surprised if you get the odd pop and bang here and there though! Also, if you remove the petrol cap, thus releasing the pressure in the tank, then put it back on again before you split the fuel lines, I think you lose less fuel. Just a thought for next time Smile

I'm no longer a virgin - jimxms - 27-05-2019

Lexusboy Wow sounds like your done a good job Jim..

At this rate your have nothing left to do to your car soon...

Cheers dude. I'm pretty please with how it went. It also gave me an opportunity to secure all of the small vacuum tubes with cable ties, as they apparently have a tendency to come off on boosted cars with positive manifold pressure.

The only issue that I've got is that the car seems to idle quite rough once its warmed up. I think its probably a tuning issue, as it idles fine when cold and drives fine. But after tearing up the roads for a while and then coming to a stop at some lights it makes a "put, put, put, put" noise from the exhaust. Doesn't seem RPM related either as it still does the same if you increase the revs.

I didnt have much time to diagnose yesterday but I'll record some AFR charts tonight and see If i can work out whats going on. I'll hazard a guess that its running a bit rich, which would probably make sense as its tuned for freezing Canadian weather.

I'm no longer a virgin - jimxms - 27-05-2019

toxo Nice one, it's always satisfying to get stuff like that done on your own car and have it work properly.

You're probably overfuelling like mad now but unlikely to be enough to get bore wash so you'll be quite safe - in fact it will cool the cylinders more. Don't be surprised if you get the odd pop and bang here and there though! Also, if you remove the petrol cap, thus releasing the pressure in the tank, then put it back on again before you split the fuel lines, I think you lose less fuel. Just a thought for next time

I forgot to mention I also hooked up my Emanage piggy that's been tuned for the 440c injectors Smile

However, as above, I think the tune is slightly off and probably running a smidgen rich. Coming off the throttle a few times during my test drive I got the occasional exhaust pop (which was actually quite satisfying) :p

I'm no longer a virgin - Lexusboy - 27-05-2019

Jim your car seemed quick before so it would be interesting to find out how much quicker it is now.

I'm no longer a virgin - jimxms - 27-05-2019

Lexusboy Jim your car seemed quick before so it would be interesting to find out how much quicker it is now.

I'll have to take you out for a spin matey Smile

I'm no longer a virgin - Dark Samurai - 27-05-2019

Sorry he couldn't do it mate, you know what it's been like with us :/
But he said well done anyway, so that's good Wink

I'm no longer a virgin - jimxms - 27-05-2019

Dont sweat it mate. Hope everything is ok, and I'll take you both for a spin as soon as everything is cool again Smile